| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 10/22/1987 | WO1987006332A1 Arrangement in steel manufacturing by means of inductive stirring |
| 10/21/1987 | CN86107174A Component synthetic halide powder for jet metallurgy and its production process |
| 10/20/1987 | US4701215 Apparatus for introducing substances into liquids e.g. metal melts |
| 10/20/1987 | CA1228235A1 Mold additives for use in continuous casting |
| 10/15/1987 | DE3612174A1 Method and apparatus for lengthening steel heating electrodes of an aftertreatment plant for molten steel |
| 10/14/1987 | EP0240927A1 Side-injected metal refining vessel |
| 10/08/1987 | WO1987005946A1 Wear-resistant steel and method for making it |
| 10/07/1987 | EP0239717A1 Very small steel refining vessel |
| 10/06/1987 | US4698095 Composite calcium clads for treating molten iron |
| 10/06/1987 | US4697632 Ceramic porous bodies suitable for use with superalloys |
| 09/30/1987 | EP0239257A1 Purifying steel |
| 09/30/1987 | EP0239152A1 Converter for preparing steel and a gas supply device for such a converter |
| 09/30/1987 | EP0239116A2 Method for determining deoxidant concentration in molten metal |
| 09/30/1987 | CN87101759A Magnesium, calcium oxide composite |
| 09/29/1987 | CA1227335A1 Process for treating steel with calcium to enhance the cold forming of the metal and reduce its silicon content |
| 09/24/1987 | DE3609783A1 Reactor casting ladle |
| 09/23/1987 | CN87102178A Injection of substances into high temperature liquids |
| 09/22/1987 | US4695318 Method of making steel |
| 09/22/1987 | US4695043 Gas scavenging apparatus for metallurgical vessels |
| 09/22/1987 | US4695042 Lance supporting apparatus |
| 09/16/1987 | EP0236801A2 Method for producing iron |
| 09/16/1987 | EP0236505A1 Case-hardening steel and process for its production |
| 09/16/1987 | CN87101937A Method of manufacturing iron |
| 09/15/1987 | CA1226737A1 High machinability steels fabrication process |
| 09/15/1987 | CA1226717A1 Continuous vacuum degassing and casting of steel |
| 09/11/1987 | WO1987005382A1 Device for degassing molten metals |
| 09/09/1987 | EP0236246A1 Mixed product in a tubular envelope containng a compacted material for treatment of liquid metals and process for its production |
| 09/09/1987 | CN87101583A Apparatus for degassing molten metal |
| 09/08/1987 | US4691899 Apparatus for reactor iron making |
| 09/02/1987 | EP0234852A1 Injection of substances into high temperature liquids |
| 09/02/1987 | EP0234623A1 Powder filled tube and a method for the continuous manufacture of such tube |
| 09/02/1987 | EP0234536A1 Method for separation of inclusions in molten metal and device for carrying out the method |
| 09/02/1987 | EP0234389A2 Tuyere for refining lances |
| 09/01/1987 | US4690386 Method of improving the service life of permeable refractory elements in bottoms of metallurgical vessels |
| 08/27/1987 | WO1987005051A1 Injection of substances into high temperature liquids |
| 08/26/1987 | CN87100770A Composite product, containing compacted material, for treatment of molten metal, and manufacture method thereof |
| 08/19/1987 | EP0232961A1 Method and apparatus for heating molten steel utilizing a plasma arc torch |
| 08/18/1987 | US4687512 Desulfurizing mixture for metal melts, process for making it, and process for desulfurizing liquid metal therewith |
| 08/12/1987 | EP0232061A2 High-strength steel for valve springs process for producing the steel, and valve springs made of the same |
| 08/11/1987 | US4686081 Method for addition of low-melting point metal |
| 08/05/1987 | EP0231137A1 Preheating burner |
| 08/04/1987 | US4684403 Dephosphorization process for manganese-containing alloys |
| 07/30/1987 | WO1987004468A1 Magnesium calcium oxide composite |
| 07/29/1987 | EP0230217A2 Gas-flushing brick for a metallurgical vessel |
| 07/29/1987 | EP0230124A1 Preventing undissolved alloying ingredient from entering continuous casting mold |
| 07/29/1987 | CN87100166A Process for smelting high alloy steels in oxygen-blowing converter |
| 07/22/1987 | EP0229586A2 Process for the production of high-alloyed steels in a basic oxygen furnace |
| 07/22/1987 | CN86107281A Qutside furnace refining method to produce high purity bearing steel |
| 07/21/1987 | US4681625 Methods for simultaneously desulfurizing and degassing steels |
| 07/16/1987 | WO1987004189A1 Preheating burner |
| 07/15/1987 | CN86100140A Smelting method for lead treated steel |
| 07/14/1987 | CA1224048A1 Process of continuously treating an alloy melt |
| 07/08/1987 | EP0228039A2 Method and apparatus for transferring heat to molten metal |
| 07/08/1987 | EP0228024A2 Method of rendering slag-bath reactions more efficient and arrangement for carrying out the method |
| 07/08/1987 | EP0227952A1 Method of controlling the stirring strength and flow rate of a jet of gas blown through a lance onto a molten metal surface |
| 07/07/1987 | CA1223744A1 Process for decarburizing alloy melts |
| 06/25/1987 | DE3643756A1 Process for aftertreating molten cast iron |
| 06/23/1987 | US4675878 Method and device for the melting and heating of materials |
| 06/23/1987 | US4675049 Process for producing high quality steel |
| 06/19/1987 | DE3544562A1 Finely granular agent for desulphurising iron melts |
| 06/19/1987 | DE3543836A1 Twin blowing lance installation for metallurgical treatments, with integral measuring lance installation |
| 06/16/1987 | US4674101 Arc-heating type extra-furnace refining apparatus |
| 06/16/1987 | US4673433 Low-alloy steel material, die blocks and other heavy forgings made thereof and a method to manufacture the material |
| 06/16/1987 | EP0225560A1 Fluidizing composition for basic slag for steel-making furnaces |
| 06/10/1987 | EP0224657A1 Gas-flushing installation for melt containers |
| 06/09/1987 | US4671820 Composite calcium clads for deoxidation and desulfurization from molten steels |
| 06/09/1987 | CA1222626A1 Apparatus for blowing powdery refining agent into refining vessel |
| 06/09/1987 | CA1222625A1 Oxygen lance |
| 06/03/1987 | EP0223991A1 Process for cooling oxygen injection tuyères in the oxygen treatment of pig iron or steel |
| 06/02/1987 | CA1222375A1 Process for adding calcium to a bath of molten ferrous material |
| 05/27/1987 | EP0223769A1 Ladle stand for treating molten metal |
| 05/27/1987 | CN86107834A Process for cooling oxygen injection nozzles in the oxygen treatment of pig iron or steel |
| 05/26/1987 | US4667939 Purifying steel |
| 05/26/1987 | US4667385 Lance for stirring molten metal and method of making the same |
| 05/19/1987 | US4666515 Method for adding bismuth to steel in a ladle |
| 05/19/1987 | US4666511 Injecting carbon dioxide |
| 05/12/1987 | US4664703 Combustion of oxygen above bath |
| 05/06/1987 | EP0220522A1 Mixture for desulfurizing metal melts, process for manufacturing it and its use |
| 05/05/1987 | US4662614 Blast pipe |
| 05/05/1987 | CA1221253A1 Exothermic alloy for addition of alloying ingredients to steel |
| 04/29/1987 | EP0219824A1 Method and apparatus for preheating charge materials for continuous steelmarking |
| 04/28/1987 | US4661151 Treating agent for desulfurizing molten steels and method for treating molten steels |
| 04/15/1987 | CN86102862A Desulfurizing process for molten iron outside furnace with high temp. liquid steel slag |
| 04/14/1987 | US4657226 Apparatus for introducing gas to molten metal within a vessel |
| 04/08/1987 | EP0217094A1 Process and installation for maintaining the temperature of a melt in a ladle |
| 04/07/1987 | US4655826 Agitation, heating arc |
| 04/07/1987 | US4655647 Method and apparatus for the acceleration of solid particles entrained in a carrier gas |
| 04/02/1987 | DE3534975A1 Lance for treating crude iron or steel |
| 04/01/1987 | EP0126132B1 Apparatus for introducing substances into liquids e.g. metal melts |
| 03/25/1987 | CN86203067U Oxygen lance combinded with outer shield gas layer |
| 03/24/1987 | US4652308 Process for refining molten steel |
| 03/24/1987 | US4652306 Method of refining molten steel by arc process |
| 03/24/1987 | US4652299 Process for treating metals and alloys for the purpose of refining them |
| 03/17/1987 | US4650517 Method of heating molten steel by arc process |
| 03/17/1987 | CA1219130A1 Steelmaking process using calcium carbide as fuel |
| 03/12/1987 | WO1987001396A1 Case-hardening steel and process for its production |
| 03/11/1987 | CN85106853A Process for refining molten metals |
| 03/10/1987 | US4648584 Hooded metallurgical vessel |
| 03/04/1987 | EP0211882A1 Apparatus for introducing treatment substances into liquids |
| 03/03/1987 | US4647020 Gas-permeable element of a refractory material |